Yoga and Kriya (1981), Ch. I : Kriya Yoga: An Introduction
Satyananda Saraswati Quotes
As quoted in Swami Sivananda's 18 ITIES & the Practice of Pratyahara (2013), p. 87
Satyananda Saraswati , was a sannyasin, yoga teacher and guru in both his native India and the West. He was a student of Sivananda Saraswati, the founder of the Divine Life Society, and founded the Bihar School of Yoga in 1964. He wrote over 80 books, including his popular 1969 manual Asana Pranayama Mudra Bandha. Wikipedia
Yoga and Kriya (1981), Ch. I : Kriya Yoga: An Introduction
As quoted in Swami Sivananda's 18 ITIES & the Practice of Pratyahara (2013), p. 87